CPC Main Group Additional Only
Y04S 40/00 Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
Filing statistics
CPC Y04S 40/00 belongs to the parent subclass Y04S, which recorded 133,508 patent applications worldwide between 2013 and 2023. Annual filings grew from 7,971 in 2013 to 16,092 in 2023 (+102%), peaking at 17,475 applications in 2022. The most active applicants in class Y04 are SGCC(STATE GRID CORPORATION OF CHINA) (11,048 applications), GUANGDONG POWER GRID CORPORATION (3,187 applications) and NORTH CHINA ELECTRIC POWER UNIVERSITY (1,200 applications).
Source: EPO PATSTAT, worldwide filings
3 direct subcodes
Child Classifications
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- Y04S 40/12 characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S 40/18 Network protocols supporting networked applications, e.g. including control of end-device applications over a network
- Y04S 40/20 Information technology specific aspects, e.g. CAD, simulation, modelling, system security
Top Applicants
Top 10 applicants by patent filingsfor class Y04, 2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 11,048
- GUANGDONG POWER GRID CORPORATION 3,187
- NORTH CHINA ELECTRIC POWER UNIVERSITY 1,200
- STATE GRID JIANGSU ELECTRIC POWER COMPANY 956
- STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER COMPANY 929
- SIEMENS DE 899
- STATE GRID ZHEJIANG ELECTRIC POWER COMPANY 794
- GUIZHOU POWER GRID CORPORATION 770
- SHENZHEN POWER SUPPLY BUREAU COMPANY 745
- STATE GRID FUJIAN ELECTRIC POWER COMPANY 720